PROCESS FOR PRODUCTION OF (POLY)THIOL COMPOUND FOR USE AS OPTICAL MATERIAL, AND POLYMERIZABLE COMPOSITION COMPRISING THE COMPOUND
申请人:Mitsui Chemicals, Inc.
公开号:EP2008998A1
公开(公告)日:2008-12-31
Disclosed is a process for producing a (poly)thiol compound fo an optical material. The process comprises reacting an organic (poly)halogen compound or a (poly)alcohol compound with thiourea to produce an isothiuronium salt and hydrolyzing the isothiuronium salt to thereby produce the (poly)thiol compound, wherein the thiourea has a calcium content of not more than 1.0 wt %.
PROCESS FOR PRODUCTION OF (POLY)THIOL COMPOUND FOR USE AS OPTICAL MATERIAL
申请人:Mitsui Chemicals, Inc.
公开号:EP2008998B1
公开(公告)日:2013-06-05
PROCESS FOR PRODUCING (POLY)THIOL COMPOUND FOR USE AS OPTICAL MATERIAL, AND POLYMERIZABLE COMPOSITION CONTAINING THE COMPOUND
申请人:Kuma Shigetoshi
公开号:US20090264613A1
公开(公告)日:2009-10-22
Disclosed is a process for producing a (poly)thiol compound for an optical material. The process comprises reacting an organic (poly)halogen compound or a (poly)alcohol compound with thiourea to produce an isothiuronium salt and hydrolyzing the isothiuronium salt to thereby produce the (poly)thiol compound, wherein the thiourea has a calcium content of not more than 1.0 wt %.